<!DOCTYPE html>
<html lang="en">
<head>
  <meta charset="UTF-8">
   <meta name="viewport" content="width=device-width, initial-scale=1.0">
   <title>Document</title>
</head>
<body>
   <script src="/CHENG-ZAO-ZAO/js/vue.js"></script>
     <div id="app">
      <p v-text=""msg>123</p>
       <p>{{msg}}123</p >
     </div>
<br>
   <script>
       let app = new Vue({
        el:"#app",
        data:{
             msg:'hello world'
        }
       })
    </script>
</body>
</html>